I picked up a bottle of this stuff based on this thread. I applied it on Saturday morning to a few specific areas of my blue M3P right after a good two bucket wash. The car is only two months old, so the original delivery store applied wax is still holding up pretty well (water is still beading). The entire front half of my car is covered in PPF (which is interesting, because that *doesn't* have any wax on it at all, AFAIK.)
I did the hood and the front bumper, but not the front quarter panels/fenders. I did the entire trunk/rear bumper area. I did the front sheet of glass on the roof, but not the rear sheet of glass.
The feeling of the finish where it was applied is amazingly slick and smooth compared to the areas where it wasn't applied. Really, a big difference in feeling. I can't say that it actually looked any different though.
Of course, it rained two days later (today) while the car was parked outside at work.
I had to move the car off the charger after the rain, so I got to see it right away. Visibly, the beading on the car overall looked exactly the same. I couldn't tell the difference between any panel where it was applied, and panels where it wasn't applied.
Hours later, when the car had dried and I was home, the car was back to being "dirty", with a good coating of dust/dirt/road grime. I couldn't tell any difference in the amount of dirt that was clinging to any of the panels when comparing coated panels to uncoated panels.
So, as far as I can tell, aside from "feeling" slicker, beadmaker hasn't actually done anything to my benefit. It's quite possible that that is due to my 2 month old wax coating. But, if that's the case, why bother applying the stuff if you are going to keep the car waxed anyway?
It's also possible that when I go to wash the car again this coming weekend that I'll find the treated panels "easier" to clean...but the car wash I use, and the level of "dirt" never seems to be a problem anyway, so I don't know what I'd actually notice.
YMMV, but that was my experience. I think I'll continue to use the bottle until it is done, but it doesn't look like I'll be ordering the gallon sized refill.